diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,9 @@
+# ChangeLog for mega-sdist
+
+## 0.3.3.1
+
+* Enable multithreaded runtime
+
 ## 0.3.3
 
 * Support for new Stack 1.8 console output
diff --git a/mega-sdist.cabal b/mega-sdist.cabal
--- a/mega-sdist.cabal
+++ b/mega-sdist.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: afc2ed4fe6e6a2099f0044f7966a1f908f3db8ba91dce47907e608dcdc3a1860
+-- hash: 719150ede9c51f6e57ec77aa6c0bf4deb3e757ce0bf4625c8020527366b97131
 
 name:           mega-sdist
-version:        0.3.3
+version:        0.3.3.1
 synopsis:       Handles uploading to Hackage from mega repos
 description:    Please see the description on Github at <https://github.com/snoyberg/mega-sdist#readme>
 category:       Distribution
@@ -40,4 +40,5 @@
     , yaml
   other-modules:
       Paths_mega_sdist
+  ghc-options: -threaded -with-rtsopts=-N
   default-language: Haskell2010